Anyone using an auxillary tramsmission oil cooler? I have seen one on Ozbrick but nothing elsewhere. Am about to embark on such a task but would rather not reinvent the wheel.

dick

I've used one for years on my '85. Pretty easy to install right in front of the lower part of the AC condenser. I used one of the silver tube Hayden units thats about 6 inches high. Just cut the tranny cooler return line and connect it in series. Since the aux cooler flow is not thermostatically controlled if you live in a area that gets cold in winter I would recommend putting some sort of temporary blockage in front of it to allow the fluid to warm up quicker.

Ops...'95.

I don't have one, however there is one already incorporated in the radiator. I have also read that the aux ones don't do much, as when the engine is under load, there isn't any flow through them. They are on a low pressure line, I believe. Hence, going up a long hill, they don't really do anything. I could be wrong.

I beg to differ. The tranny cooler in the radiator is a great idea, except when you live in Texas or other warm spots and have the AC on all of the time. The radiator is behind the AC condenser, an extremely hot piece of gear, which does not help the cooling effect of the tranny and oil cooler built in to the radiator.
The fluid pump in the tranny works off of engine rpms, so that the higher the rpms the higher the flow rate. Volvo suggests that when you are hauling heavy loads or a trailer up hill, down shift to a lower gear to assist the cooling. That just means pumping more fluid through the cooler to keep the temp down.

Having an aux cooler in front of the radiator, down low to catch the air from the opening in the lower bumper scoop would be ideal for hot climates.

Any tranny cooler on the market for American cars would work, so long as the inside pipe connections are of the same size as is currently on the Volvos. The AC systems are not Volvo specific, thank goodness, so just making sure the cooler fits into the radiator opening should suffice.

Klaus

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The 164 has a new home, all I am left with are a 95 854T and a 98 V70R :)

Darn, have to work the next two days so will have to delay my project till this weekend. As said, I have put one in my 93 940 T and this should be simpler once I find the proper mounting location.

dick